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Old Sep 02, 2008, 12:49 PM
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Electric Brushless Motors

[B]HELP
Can anyone tell me how to find out how to tell how many Poles a brushless electric motor has by just looking at it or is that possible???
Jim
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Old Sep 02, 2008, 02:27 PM
An itch?. Scratch build.
eflightray's Avatar
South Wales U.K.
Joined Mar 2003
13,620 Posts
Usually you rotate the shaft by hand and count the 'notches' as it passes the magnets.

If its to set the ESC timing, some inrunners have a low number, whereas most outrunners are a high number.

If you want more information on brushless motors, there is a very good forum here called Electric Motor Design and Construction

And welcome to RCGroups.
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Old Sep 04, 2008, 08:33 AM
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Thanks for the link Eflightray it has answered a lot of my questions.
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